Owen King 
Self Help #2 [PDF ebook] 

Downonhisluck rideshare driver Jerry Hauser’s night has taken an abrupt turn, and he now finds himself posing as selfhelp guru Darren Hart. This presents certain challenges for tonight’s meeting: Darren’s shrewdly opportunistic assistant Cassandra is suspicious, and their host, Ove, an offhisrocker Finnish gangster, has a hungry panther in the backyard. Jerry will be lucky to get away with his con…and his life.